AnimationDrawable not playing

Question

So I want my animation to start as soon as the activity is created, but for some reason no matter what I try will get it to start. I can get it to start by having a click ev

Answer 1

My solution for playing animations while they are visible. It let you declare (in xml layout) and forget.

class AnimatedImageView extends ImageView {
    // required constructors omitted for clarity 

    private void updateAnimationsState() {
        boolean running = getVisibility() == View.VISIBLE && hasWindowFocus();
        updateAnimationState(getDrawable(), running);
        updateAnimationState(getBackground(), running);
    }

    private void updateAnimationState(Drawable drawable, boolean running) {
        if(drawable instanceof AnimationDrawable) {
            AnimationDrawable animationDrawable = (AnimationDrawable) drawable;
            if(running) {
                animationDrawable.start();
            } else {
                animationDrawable.stop();
            }
        }
    }

    @Override
    protected void onVisibilityChanged(View changedView, int visibility) {
        super.onVisibilityChanged(changedView, visibility);
        updateAnimationsState();
    }

    @Override
    public void onWindowFocusChanged(boolean hasWindowFocus) {
        super.onWindowFocusChanged(hasWindowFocus);
        updateAnimationsState();
    }
}

If you setup drawable from code, then you should override appropriate set*() methods and call updateAnimationsState() from there.